diff options
| author | Yuhang Zhao <2546789017@qq.com> | 2018-12-11 00:52:36 +0800 |
|---|---|---|
| committer | Yuhang Zhao <2546789017@qq.com> | 2018-12-16 10:40:03 +0000 |
| commit | b34143f8a19040a457d399a22f0bde53ac327ff1 (patch) | |
| tree | a9f9f8cd8c4dd67b1234864c65cc4fda2abbf2f5 /mkspecs/win32-clang-msvc/qmake.conf | |
| parent | 8571abc09720d17a60361b8ab88d5eb8110d9dea (diff) | |
Fix clang LTCG config on Windows
To enable LTCG, clang-cl.exe need "-flto" instead of "-GL". But if you
enabled LTO, the lib tool will have to change to "llvm-lib.exe" and the
link tool also need to change to "lld-link.exe", because msvc linker
will see these lib files as corrupted files. Leave QMAKE_LFLAGS_LTCG
empty because lld-link doesn't need any additional parameters.
Fixes: QTBUG-72402
Change-Id: Ia34d98bd1ad919d542ea3eac83944bf8c40ce0cd
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Diffstat (limited to 'mkspecs/win32-clang-msvc/qmake.conf')
| -rw-r--r-- | mkspecs/win32-clang-msvc/qmake.conf | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mkspecs/win32-clang-msvc/qmake.conf b/mkspecs/win32-clang-msvc/qmake.conf index ba9704e069..027f93ca6e 100644 --- a/mkspecs/win32-clang-msvc/qmake.conf +++ b/mkspecs/win32-clang-msvc/qmake.conf @@ -15,6 +15,14 @@ QMAKE_CFLAGS += -Wno-microsoft-enum-value QMAKE_CXXFLAGS += -Wno-microsoft-enum-value +QMAKE_LINK = lld-link +QMAKE_LIB = llvm-lib /NOLOGO + +QMAKE_CFLAGS_LTCG = -flto +QMAKE_CXXFLAGS_LTCG = $$QMAKE_CFLAGS_LTCG +# Leave QMAKE_LFLAGS_LTCG empty because lld-link doesn't need any additional parameters +QMAKE_LFLAGS_LTCG = + # Precompiled headers are not supported yet by clang CONFIG -= precompile_header |